Program.cs

await CreateTable(sourceTableName);
await CreateTable(destinationTableNameSlow);
await CreateTable(destinationTableNameFast);

//wait until source table is created
var describeTableRequest = new DescribeTableRequest
{
    TableName = sourceTableName
};
DescribeTableResponse describeTableResponse;
do
{
    System.Threading.Thread.Sleep(1000);
    describeTableResponse = await client.DescribeTableAsync(describeTableRequest);
}
while (describeTableResponse.Table.TableStatus != TableStatus.ACTIVE);